Speech Production |
Silence Percent |
Percentage of time not speaking |
Less percentage of time speaking |
None |
Percentage |
Pause Mean |
Average pause length in milliseconds (ms), excluding the first and last pauses. |
Longer average pauses |
None |
Milliseconds |
Utterance Number |
Total number of utterances (> 150 ms) |
More utterances |
Computed, per 60,000 milliseconds |
Number of Utterances per minute of speech |
Utterance Mean |
Average utterance length in milliseconds (ms) |
Longer average utterances |
None |
Milliseconds |
Speech Variability |
Frequency Perturbation |
Absolute value of average change in consecutively voiced frames within utterance, averaged across utterances. |
Increasing levels of perturbation in F0 signal |
None |
Semitones |
Local Intonation |
SD of F0 values computed within each utterance and averaged across all utterances |
Higher F0 variability within utterances. |
Converted to semitones, |
Semitones, per second of average speech |
Intensity Perturbation |
Absolute value of average change in consecutively voiced frames within utterance, averaged across utterances. |
Increasing levels of perturbation in intensity signal |
None |
Decibels |
Local Emphasis |
SD of Intensity values computed within each utterance and averaged across all utterances |
Higher intensity variability within utterances. |
Divided by average utterance length in seconds |
Decibels, per second of average speech |